<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			//Boolean函数有什么作用？请举例说明
			console.log("可以用该函数来确定表达式（或者变量）是否为真。")
			console.log((Boolean(10>9)));
		</script>
	</body>
</html>
